]> git.lizzy.rs Git - dragonfireclient.git/blobdiff - src/mapgen_v5.cpp
Move hex.h to util/
[dragonfireclient.git] / src / mapgen_v5.cpp
index 16fe4be5d4ed84b2476269bcdc4ba378dc1f437a..ed18f7d0b64ac46a632c2393f08f28ff649176e3 100644 (file)
@@ -42,7 +42,6 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 
 
 FlagDesc flagdesc_mapgen_v5[] = {
-       {"blobs", MGV5_BLOBS},
        {NULL,         0}
 };
 
@@ -73,8 +72,6 @@ MapgenV5::MapgenV5(int mapgenid, MapgenParams *params, EmergeManager *emerge)
        noise_cave1        = new Noise(&sp->np_cave1,   seed, csize.X, csize.Y + 2, csize.Z);
        noise_cave2        = new Noise(&sp->np_cave2,   seed, csize.X, csize.Y + 2, csize.Z);
        noise_ground       = new Noise(&sp->np_ground,  seed, csize.X, csize.Y + 2, csize.Z);
-       noise_crumble      = new Noise(&sp->np_crumble, seed, csize.X, csize.Y + 2, csize.Z);
-       noise_wetness      = new Noise(&sp->np_wetness, seed, csize.X, csize.Y + 2, csize.Z);
 
        // Biome noise
        noise_heat         = new Noise(&params->np_biome_heat,     seed, csize.X, csize.Z);
@@ -117,8 +114,6 @@ MapgenV5::~MapgenV5()
        delete noise_cave1;
        delete noise_cave2;
        delete noise_ground;
-       delete noise_crumble;
-       delete noise_wetness;
 
        delete noise_heat;
        delete noise_humidity;
@@ -130,32 +125,19 @@ MapgenV5::~MapgenV5()
 
 MapgenV5Params::MapgenV5Params()
 {
-       spflags = MGV5_BLOBS;
+       spflags = 0;
 
        np_filler_depth = NoiseParams(0, 1,  v3f(150, 150, 150), 261,    4, 0.7,  2.0);
        np_factor       = NoiseParams(0, 1,  v3f(250, 250, 250), 920381, 3, 0.45, 2.0);
        np_height       = NoiseParams(0, 10, v3f(250, 250, 250), 84174,  4, 0.5,  2.0);
-       np_cave1        = NoiseParams(0, 6,  v3f(50,  50,  50),  52534,  4, 0.5,  2.0, NOISE_FLAG_EASED);
-       np_cave2        = NoiseParams(0, 6,  v3f(50,  50,  50),  10325,  4, 0.5,  2.0, NOISE_FLAG_EASED);
+       np_cave1        = NoiseParams(0, 12, v3f(50,  50,  50),  52534,  4, 0.5,  2.0);
+       np_cave2        = NoiseParams(0, 12, v3f(50,  50,  50),  10325,  4, 0.5,  2.0);
        np_ground       = NoiseParams(0, 40, v3f(80,  80,  80),  983240, 4, 0.55, 2.0, NOISE_FLAG_EASED);
-       np_crumble      = NoiseParams(0, 1,  v3f(20,  20,  20),  34413,  3, 1.3,  2.0, NOISE_FLAG_EASED);
-       np_wetness      = NoiseParams(0, 1,  v3f(40,  40,  40),  32474,  4, 1.1,  2.0);
 }
 
 
-// Current caves noise scale default is 6 to compensate for new eased 3d noise amplitude
-
-// Scaling the output of the noise function affects the overdrive of the
-// contour function, which affects the shape of the output considerably.
-
-//#define CAVE_NOISE_SCALE 12.0 < original default
-//#define CAVE_NOISE_SCALE 10.0
-//#define CAVE_NOISE_SCALE 7.5
-//#define CAVE_NOISE_SCALE 5.0
-//#define CAVE_NOISE_SCALE 1.0
-
-//#define CAVE_NOISE_THRESHOLD (2.5/CAVE_NOISE_SCALE)
-//#define CAVE_NOISE_THRESHOLD (1.5/CAVE_NOISE_SCALE) < original and current code
+//#define CAVE_NOISE_SCALE 12.0
+//#define CAVE_NOISE_THRESHOLD (1.5/CAVE_NOISE_SCALE) = 0.125
 
 
 void MapgenV5Params::readParams(Settings *settings)
@@ -168,8 +150,6 @@ void MapgenV5Params::readParams(Settings *settings)
        settings->getNoiseParams("mgv5_np_cave1",        np_cave1);
        settings->getNoiseParams("mgv5_np_cave2",        np_cave2);
        settings->getNoiseParams("mgv5_np_ground",       np_ground);
-       settings->getNoiseParams("mgv5_np_crumble",      np_crumble);
-       settings->getNoiseParams("mgv5_np_wetness",      np_wetness);
 }
 
 
@@ -183,8 +163,6 @@ void MapgenV5Params::writeParams(Settings *settings)
        settings->setNoiseParams("mgv5_np_cave1",        np_cave1);
        settings->setNoiseParams("mgv5_np_cave2",        np_cave2);
        settings->setNoiseParams("mgv5_np_ground",       np_ground);
-       settings->setNoiseParams("mgv5_np_crumble",      np_crumble);
-       settings->setNoiseParams("mgv5_np_wetness",      np_wetness);
 }
 
 
@@ -201,9 +179,6 @@ int MapgenV5::getGroundLevelAtPoint(v2s16 p)
 
        s16 search_top = water_level + 15;
        s16 search_base = water_level;
-       // Use these 2 lines instead for a slower search returning highest ground level
-       //s16 search_top = h + f * noise_ground->np->octaves * noise_ground->np->scale;
-       //s16 search_base = h - f * noise_ground->np->octaves * noise_ground->np->scale;
 
        s16 level = -31000;
        for (s16 y = search_top; y >= search_base; y--) {
@@ -253,14 +228,8 @@ void MapgenV5::makeChunk(BlockMakeData *data)
 
        // Generate base terrain
        s16 stone_surface_max_y = generateBaseTerrain();
-
        updateHeightmap(node_min, node_max);
 
-       // Generate underground dirt, sand, gravel and lava blobs
-       if (spflags & MGV5_BLOBS) {
-               generateBlobs();
-       }
-
        // Calculate biomes
        bmgr->calcBiomes(csize.X, csize.Z, noise_heat->result,
                noise_humidity->result, heightmap, biomemap);
@@ -268,6 +237,10 @@ void MapgenV5::makeChunk(BlockMakeData *data)
        // Actually place the biome-specific nodes
        generateBiomes();
 
+       // Generate caves
+       if ((flags & MG_CAVES) && (stone_surface_max_y >= node_min.Y))
+               generateCaves(stone_surface_max_y);
+
        // Generate dungeons and desert temples
        if ((flags & MG_DUNGEONS) && (stone_surface_max_y >= node_min.Y)) {
                DungeonGen dgen(this, NULL);
@@ -289,8 +262,10 @@ void MapgenV5::makeChunk(BlockMakeData *data)
        updateLiquid(&data->transforming_liquid, full_node_min, full_node_max);
 
        // Calculate lighting
-       if (flags & MG_LIGHT)
-               calcLighting(node_min - v3s16(0, 1, 0), node_max + v3s16(0, 1, 0));
+       if (flags & MG_LIGHT) {
+               calcLighting(node_min - v3s16(0, 1, 0), node_max + v3s16(0, 1, 0),
+                       full_node_min, full_node_max);
+       }
 
        this->generating = false;
 }
@@ -303,21 +278,20 @@ void MapgenV5::calculateNoise()
        int y = node_min.Y - 1;
        int z = node_min.Z;
 
-       noise_filler_depth->perlinMap2D(x, z);
        noise_factor->perlinMap2D(x, z);
        noise_height->perlinMap2D(x, z);
-
-       noise_cave1->perlinMap3D(x, y, z);
-       noise_cave2->perlinMap3D(x, y, z);
        noise_ground->perlinMap3D(x, y, z);
 
-       if (spflags & MGV5_BLOBS) {
-               noise_crumble->perlinMap3D(x, y, z);
-               noise_wetness->perlinMap3D(x, y, z);
+       if (flags & MG_CAVES) {
+               noise_cave1->perlinMap3D(x, y, z);
+               noise_cave2->perlinMap3D(x, y, z);
        }
 
-       noise_heat->perlinMap2D(x, z);
-       noise_humidity->perlinMap2D(x, z);
+       if (node_max.Y >= water_level) {
+               noise_filler_depth->perlinMap2D(x, z);
+               noise_heat->perlinMap2D(x, z);
+               noise_humidity->perlinMap2D(x, z);
+       }
 
        //printf("calculateNoise: %dus\n", t.stop());
 }
@@ -329,7 +303,6 @@ void MapgenV5::calculateNoise()
 //     return d1*d2 > CAVE_NOISE_THRESHOLD;
 //}
 
-
 //bool val_is_ground(v3s16 p, u32 index, u32 index2d) {
 //     double f = 0.55 + noise_factor->result[index2d];
 //     if(f < 0.01)
@@ -341,7 +314,6 @@ void MapgenV5::calculateNoise()
 //}
 
 
-// Make base ground level
 int MapgenV5::generateBaseTerrain()
 {
        u32 index = 0;
@@ -360,17 +332,13 @@ int MapgenV5::generateBaseTerrain()
                                        f = 0.01;
                                else if(f >= 1.0)
                                        f *= 1.6;
-                               float h = water_level + noise_height->result[index2d];
-                               float d1 = contour(noise_cave1->result[index]);
-                               float d2 = contour(noise_cave2->result[index]);
+                               float h = noise_height->result[index2d];
 
                                if(noise_ground->result[index] * f < y - h) {
                                        if(y <= water_level)
                                                vm->m_data[i] = MapNode(c_water_source);
                                        else
                                                vm->m_data[i] = MapNode(CONTENT_AIR);
-                               } else if(d1*d2 > 0.2) {
-                                       vm->m_data[i] = MapNode(CONTENT_AIR);
                                } else {
                                        vm->m_data[i] = MapNode(c_stone);
                                        if (y > stone_surface_max_y)
@@ -386,38 +354,6 @@ int MapgenV5::generateBaseTerrain()
 }
 
 
-// Add mud and sand and others underground (in place of stone)
-void MapgenV5::generateBlobs()
-{
-       u32 index = 0;
-
-       for(s16 z=node_min.Z; z<=node_max.Z; z++) {
-               for(s16 y=node_min.Y - 1; y<=node_max.Y + 1; y++) {
-                       u32 i = vm->m_area.index(node_min.X, y, z);
-                       for(s16 x=node_min.X; x<=node_max.X; x++, i++, index++) {
-                               content_t c = vm->m_data[i].getContent();
-                               if(c != c_stone)
-                                       continue;
-
-                               if(noise_crumble->result[index] > 1.3) {
-                                       if(noise_wetness->result[index] > 0.0)
-                                               vm->m_data[i] = MapNode(c_dirt);
-                                       else
-                                               vm->m_data[i] = MapNode(c_sand);
-                               } else if(noise_crumble->result[index] > 0.7) {
-                                       if(noise_wetness->result[index] < -0.6)
-                                               vm->m_data[i] = MapNode(c_gravel);
-                               } else if(noise_crumble->result[index] < -3.5 +
-                                               MYMIN(0.1 *
-                                               sqrt((float)MYMAX(0, -y)), 1.5)) {
-                                       vm->m_data[i] = MapNode(c_lava_source);
-                               }
-                       }
-               }
-       }
-}
-
-
 void MapgenV5::generateBiomes()
 {
        if (node_max.Y < water_level)
@@ -447,11 +383,8 @@ void MapgenV5::generateBiomes()
 
                for (s16 y = node_max.Y; y >= node_min.Y; y--) {
                        content_t c = vm->m_data[i].getContent();
-                       bool is_replaceable_content =
-                               c == c_stone || c == c_dirt_with_grass || c == c_dirt ||
-                               c == c_sand  || c == c_lava_source     || c == c_gravel;
 
-                       if (is_replaceable_content && have_air) {
+                       if (c == c_stone && have_air) {
                                content_t c_below = vm->m_data[i - em.X].getContent();
 
                                if (c_below != CONTENT_AIR) {
@@ -506,14 +439,53 @@ void MapgenV5::generateBiomes()
 }
 
 
-void MapgenV5::dustTopNodes()
+void MapgenV5::generateCaves(int max_stone_y)
 {
-       v3s16 em = vm->m_area.getExtent();
        u32 index = 0;
+       u32 index2d = 0;
+
+       for(s16 z=node_min.Z; z<=node_max.Z; z++) {
+               for(s16 y=node_min.Y - 1; y<=node_max.Y + 1; y++) {
+                       u32 i = vm->m_area.index(node_min.X, y, z);
+                       for(s16 x=node_min.X; x<=node_max.X; x++, i++, index++, index2d++) {
+                               Biome *biome = (Biome *)bmgr->get(biomemap[index2d]);
+                               content_t c = vm->m_data[i].getContent();
+                               if(c == CONTENT_AIR
+                                               || (y <= water_level
+                                               && c != biome->c_stone
+                                               && c != c_stone))
+                                       continue;
 
-       if (water_level > node_max.Y)
+                               float d1 = contour(noise_cave1->result[index]);
+                               float d2 = contour(noise_cave2->result[index]);
+                               if(d1*d2 > 0.125)
+                                       vm->m_data[i] = MapNode(CONTENT_AIR);
+                       }
+                       index2d = index2d - ystride;
+               }
+               index2d = index2d + ystride;
+       }
+
+       if (node_max.Y > -256)
                return;
 
+       PseudoRandom ps(blockseed + 21343);
+       u32 bruises_count = (ps.range(1, 5) == 1) ? ps.range(1, 2) : 0;
+       for (u32 i = 0; i < bruises_count; i++) {
+               CaveV5 cave(this, &ps);
+               cave.makeCave(node_min, node_max, max_stone_y);
+       }
+}
+
+
+void MapgenV5::dustTopNodes()
+{
+       if (node_max.Y < water_level)
+               return;
+
+       v3s16 em = vm->m_area.getExtent();
+       u32 index = 0;
+
        for (s16 z = node_min.Z; z <= node_max.Z; z++)
        for (s16 x = node_min.X; x <= node_max.X; x++, index++) {
                Biome *biome = (Biome *)bmgr->get(biomemap[index]);